You burn anywhere from 400 to 600 calories per hour skiing, depending on your weight and how aggressively you ski. Plus, the colder it is, the harder your body has to work to keep warm. A hearty breakfast and a sensible lunch are important, but you need to fuel your muscles between meals, too. Energy bars are a standard choice, and for good reason: They pack a lot of calories into a little space. But sometimes those pocket-sized meals are more than you need. Luckily, they’re no longer your only option. By Caroline Johnson